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| author | Roman Musin <995612+roman-r-m@users.noreply.github.com> | 2024-01-21 17:01:23 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-01-21 18:01:23 +0100 |
| commit | 7bfc7eaec67d35ae8f13f4fe858889420a2d972e (patch) | |
| tree | a0c8dbb8158e7a08097d8376e0e270d42f47d696 /calculate_average_roman-r-m.sh | |
| parent | 3e1951379a6014ae8b711657786d0bf3eb725b0e (diff) | |
Reduce allocations and heap size (#525)
* Reduce allocations
* Shrink the heap size
* Calculate hash when reading name (50-100ms difference)
* no need to reverse bytes
* bump heap size
Diffstat (limited to 'calculate_average_roman-r-m.sh')
| -rwxr-xr-x | calculate_average_roman-r-m.sh | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/calculate_average_roman-r-m.sh b/calculate_average_roman-r-m.sh index fe468dc..b5d0b3d 100755 --- a/calculate_average_roman-r-m.sh +++ b/calculate_average_roman-r-m.sh @@ -19,7 +19,6 @@ JAVA_OPTS="--enable-preview -XX:+UseTransparentHugePages" # epsilon GC needs enough memory or it makes things worse # see https://stackoverflow.com/questions/58087596/why-are-repeated-memory-allocations-observed-to-be-slower-using-epsilon-vs-g1 -# 2GB seems to be the sweet spot -JAVA_OPTS="$JAVA_OPTS -XX:+UnlockExperimentalVMOptions -XX:-EnableJVMCI -XX:+UseEpsilonGC -Xmx2G -Xms2G -XX:+AlwaysPreTouch" +JAVA_OPTS="$JAVA_OPTS -XX:+UnlockExperimentalVMOptions -XX:-EnableJVMCI -XX:+UseEpsilonGC -Xmx1G -Xms1G -XX:+AlwaysPreTouch" java $JAVA_OPTS --class-path target/average-1.0.0-SNAPSHOT.jar dev.morling.onebrc.CalculateAverage_roman_r_m |